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1The process by which heat or electricity is directly transmitted through the material of a substance when there is a difference of temperature or of electrical potential between adjoining regions, without movement of the material.
- ‘Under equal electrochemical potential gradients, conduction of protons across ion channels occurs at a rate typically an order-of-magnitude higher than that of other small ions.’
- ‘Electrical wiring and telephone lines can transmit such signals by conduction; walls can vibrate subtly, as can pipes, beams, ducts, and the like.’
- ‘So far, electron conduction has only been found in a few, high electron-affinity organic semiconductors, until now.’
- ‘Vanadium-vanadium bonds are stable below the transition temperature, which ‘lock’ the electrons and prevent conduction.’
- ‘Heat gain or loss results from four heat exchange processes - convection, conduction, radiation and evaporation.’
- ‘In solids that conduct electricity, heat conduction is further enhanced by the drift of free electrons.’
- ‘‘This is opposite of what you would think in terms of simple and ordinary heat conduction,’ Dlott said.’
- ‘There are four processes by which the body rids itself of excess heat: conduction, convection, radiation, and evaporation.’
- ‘Can we predict the temperature profile from the known geometry and heat conduction of water?’
- ‘The thermal emissions come to the surface through heat conduction in a few milliseconds as a function of the pulse energy and the synchronized signal capture.’
- ‘The disk is cooled primarily by conduction across the gap region, which can be filled with high-thermal-conductivity gases like helium.’
- ‘A hot copper cube in contact with a cold iron cube would, for example, heat it primarily by conduction.’
- ‘Heat will only leave the container by radiation, convection and conduction if the temperature of the container is higher than the surroundings.’
- ‘Their research shows that the surfactant layer must be analyzed in terms of its vibrational couplings, rather than by ordinary heat conduction.’
- ‘A mixture optimized for a single property, such as heat conduction, looks like blobs of one material suspended in another.’
- ‘The successive hops clearly do not have to involve an individually tagged proton; in this respect, proton currents resemble electrical conduction in a conductor.’
- ‘Now physicists at Northwestern University show that, using the fact that electrons carry heat as well as charge, the conduction of heat may be similarly tuned.’
- ‘Better heat conduction allows cooler internal operating temperature and hence less cracking and longer life.’
- ‘Electrical conduction is the net motion of electric charge, and it cannot take place without the motion of matter on some scale.’
- ‘This is the concept behind electrical conduction.’
- 1.1 The process by which sound waves travel through a medium.
- ‘Furthermore a database having typical sound conduction components for a number of typical hearing impairments is provided.’
- ‘Sound normally reaches the cochlea via the ear canal and the middle ear, but it may also reach the cochlea through bone conduction.’
- ‘Egophony results from the change in frequency dependence of sound conduction when fluid replaces air and is heard over consolidation or pleural effusion.’
- ‘We have seen how the normal outer and middle ears participate in sound conduction.’
- ‘Deafness, therefore, is caused by conduction deafness.’
- ‘It was found that sound conduction through dolphin tissues was more effective than that in a northern fur seal in a wide frequency range.’
- 1.2 The transmission of impulses along nerves.
- ‘In a subset of patients monitored by serial testing, abnormalities in phrenic nerve conduction and diaphragmatic excursion normalized by 9 months after surgery.’
- ‘Most cardiac arrhythmias result from disorders of impulse formation, impulse conduction or a combination of both.’
- ‘Local anesthetics block the generation and conduction of all nerve impulses - sensory, motor, and autonomic - depending on the site of injection.’
- ‘If aluminium causes direct neuronal death, why would this lead to slowing of conduction along the axons of the optic nerves?’
- ‘A further burden is the high content of neurofilament protein susceptible to oxidative and nitrative changes leading to misfolding and aggregations and poor nerve conduction.’
- ‘MS occurs when parts of the covering of the brain and spinal cord are lost, which disrupts the conduction of the nerve impulse.’
- ‘Although the medication did reduce some nerve sorbitol and there was some improvement in nerve conduction, the medication's efficacy was limited, and adverse effects were problematic.’
- ‘Cocaine blocks the initiation or conduction of nerve impulses following local application by blocking depolarization via sodium influx inhibition.’
- ‘Its most important action is its ability to block the initiation or conduction of the nerve impulse following local application.’
- ‘Physical examination was supplemented by laboratory tests, which included pulmonary function and peripheral nerve conduction.’
- ‘After nerve conduction tests the diagnosis was peripheral sensory neuropathy.’
- ‘Disturbances in this ration can alter cardiac rhythms, transmission and conduction of nerve impulses, and muscle contraction.’
- ‘This is achieved by the propagation of the chemotactic signal, in a manner rather similar to the conduction of a nerve impulse.’
- ‘A flutter is defined as a rhythmic cycling of an electrical impulse and a fibrillation is defined as uncoordinated and ‘out-of-control’ impulse conduction.’
- ‘Myelination increases substantially the speed of conduction of nerve impulses.’
- ‘If the slowing of nerve conduction affects all nerves roughly equally the diagnosis is likely to be the demyelinating form of Charcot-Marie-Tooth disease.’
- ‘Damage to the Schwann cells leads to impairment of nerve conduction.’
- ‘Thus, we evaluated these patients for the presence of antibodies to 9 neural antigens, as well as for evidence of abnormalities in peripheral nerve conduction.’
- ‘It is the influx of sodium into the cell that is responsible for generating an action potential, which causes depolarization and conduction of the nerve impulse.’
- ‘Second degree heart block results from partial blockade to impulse conduction; some impulses are conducted to the ventricles but others are blocked.’
- 1.3 The conveying of fluid through a channel.
- ‘The results show a dislocation of the nanotube indicative of a possible disassembly process that may influence the channel conduction.’
- ‘A fluid handling port array (102) includes at least one fluid conduction bore.’
- ‘This kind of cell is better for fluid conduction than physical support.’
- ‘Carbon nanotubes, unmodified (pristine) and modified through charged atoms, were simulated in water, and their water conduction rates determined.’
- ‘This number is explained in terms of channel architecture and conduction mechanism.’
Mid 16th century (in the senses ‘provision for safe passage’ and ‘leadership’): from Latin conductio(n-), from the verb conducere (see conduct).
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